We have complete school bus camera packages to secure your school bus. Choose a single camera model or up to a 2 camera model. Analog or HD. Installs quickly and easily. Depending on your budget we offer 1080p high definition packages as well. The 1 and 2 camera bundles are utilizing a small 12 VDC DVR. All the models have microphones included. If you do not require audio, then simply do not use the microphones.